導出Excel的方法：
衆所周知，操作Excel一般分兩種，其一就是用類似連接數據庫的方式，將EXCEL文件當作小型數據庫操作，這種方式我想大多數程序員都很喜歡；另一種就是用Microsoft.Office.Interop.Excel組件,引用組件則需要using Microsoft.Office.Interop.Excel，以下就是引用組件的方法：
方法一：
#region 導出Excel的方法(其是將頁面的內容直接輸出，是html格式)
/// <summary>
/// 導出Excel的方法
/// </summary>
/// <param name="dt"></param>
/// <param name="dd"></param>
/// <param name="Name1"></param>
public void Export(System.Data.DataTable dt, string[] dd, string Name)
{
Response.ContentEncoding = Encoding.GetEncoding("GB2312");
//不是導出的excel文件名亂碼是你自己把文件名編碼了,是你用UrlEncode把文件名編碼了,用HttpUtility.UrlDecode把文件名解碼即可
Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(Name, Encoding.UTF8).ToString() + ".xls");
Response.ContentType = "application/ms-excel";
this.EnableViewState = false;
StringBuilder productHeader = new StringBuilder(@"<table border='1' cellpadding='1'><tr>");
StringBuilder productRow = new StringBuilder("");
DataRow[] dr = dt.Select("1=1");
int itemCount = dt.Rows.Count;
int columnCount = dt.Columns.Count;
string[] cc = dd;
for (int i = 0; i < cc.Length; i++)
{
productHeader.Append("<td >" + cc[i] +
"</td>");
}
productHeader.Append("</tr>");
Response.Write(productHeader.ToString());
for (int j = 0; j < itemCount; j++)
{
productRow.Append("<tr>");
for (int k = 0; k < columnCount; k++)
{
if (k == columnCount - 2)
{
productRow.Append(@"<td style='text-align:left;width:75%;mso-number-format:'\@''>" + dr[j][k].ToString() +
"</td>");
}
else
{
if (k == 1)
{
productRow.Append(@"<td style='text-align: left;vnd.ms-excel.numberformat:@;'>" +
dr[j][k].ToString() + "</td>");
}
else
{
productRow.Append("<td style='text-align: left;'>" + dr[j][k].ToString() + "</td>");
}
}
}
productRow.Append("</tr>");
}
productRow.Append("</table>");
Response.Write("<meta http-equiv=\"content-type\" content=\"application/ms-excel; charset=GB2312\"/>" +
productRow);
Response.End();
}
#endregion
方法二：
#region 導出Excel的方法
/// <summary>
/// 導出Excel的方法
/// </summary>
/// <param name="dt"></param>
/// <param name="dd"></param>
/// <param name="FileName"></param>
public void CreateExcel(System.Data.DataTable dt, string[] dd, string FileName)
{
HttpResponse resp;
resp = Page.Response;
resp.ContentEncoding = Encoding.GetEncoding("GB2312");
resp.ContentType = "application/ms-excel";
this.EnableViewState = false;
resp.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString() + ".xls");
string colHeaders = "", ls_item = "";
int i = 0;
DataRow[] myRow = dt.Select("1=1");
string[] cc = dd;
for (i = 0; i < cc.Length; i++)
{
if (i == cc.Length - 1)
{
colHeaders += cc[i].ToString() + "\n";
}
else
{
colHeaders += cc[i].ToString() + "\t";
}
}
resp.Write(colHeaders);
foreach (DataRow row in myRow)
{
for (i = 0; i < dt.Columns.Count; i++)
{
if (i == dt.Columns.Count - 1)
{
if (i == 1)
{
ls_item += "'" + row[i].ToString() + "\n";
}
else
{
ls_item += row[i].ToString() + "\n";
}
}
else
{
ls_item += "'" + row[i].ToString() + "\t";
}
}
resp.Write(ls_item);
ls_item = "";
}
//寫緩衝區中的數據到HTTP頭文件中
resp.End();
}
#endregion
導入Excel的方法：
而導入Excel需要固定的模板，再導入方法界面初始化的時候寫綁定FORM提交事件，然後直接讀取Excel文件
/// <summary>
/// 獲取Excel文件
/// </summary>
/// <param name="context"></param>
/// <param name="file"></param>
/// <param name="dt"></param>
private void UploadFormData(HttpContext context, HttpPostedFile file,ref DataTable dt)
{
if (file!=null)
{
string fileName = DateTime.Now.ToString("yyyyMMddHHmmssfff") + file.FileName.Substring(file.FileName.LastIndexOf('.'));//file.FileName;
string savePath = Server.MapPath("~/file/");
file.SaveAs(savePath + fileName);
DataOperator(fileName, savePath,ref dt);
if (File.Exists(savePath + fileName))
{
File.Delete(savePath + fileName);
}
}
}
/// <summary>
/// 數據操作
/// </summary>
/// <param name="fileName"></param>
/// <param name="savePath"></param>
private void DataOperator(string fileName, string savePath, ref DataTable dt)
{
//2003（Microsoft.Jet.Oledb.4.0）
string myString = "Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source = " + savePath + fileName + ";Extended Properties=Excel 8.0";
//2010（Microsoft.ACE.OLEDB.12.0）
// string myString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + savePath + fileName + ";Extended Properties='Excel 12.0;";
OleDbConnection oconn = new OleDbConnection(myString);
oconn.Open();
DataSet ds = new DataSet();
OleDbDataAdapter oda = new OleDbDataAdapter("select * from [Sheet1$]", oconn);
oda.Fill(ds);
oconn.Close();
dt=ds.Tables[0];
}
